Packless valve



Nov. 7, 1944. w.- c. MARSH I PACKLESS VALVE Filed Sept. 23, 1943 mvmon willful. Q. mars/9 vBY , Patented Nov. 7,1944

BACKLESS VALVE William Marsh, Dunkirk, N. Y.

Application September 23, 1943, Serial No. 503,577

. 1 Claim. (01. 251-31) This invention relates generally to valves, and more particularly to a novel packless valve.

All valves made according to the teachings of' the prior art andwith which I am familiar, have had some weak point which would permit leakage after a very short time in use, especially under severe conditions. This has been particularly true of packed valves.

It is, accordingly, an object of my invention to overcome the above and other defects in valves and it is more particularly an object of my invention to provide a valve which is simple in construction, easy to assemble, economical in manufacture, and efficient in operation.

Another object of my invention is to provide a packless valve which is error-proof in assembly and in re-assembly.

Another object of my invention is to provide a spring-urged sealing plate in a valve.

Another object of my invention is to provide a packless valve whose operation is positive at any pressure.

Another object of my invention is to provide a packless valv wherein the pressure in the valve is utilized to assure more perfect seals.

Other objects of my invention will become evident from th following detailed description, taken in conjunction with the accompanying drawing, in which:

Fig. 1 is a cross-sectional view of my novel packless valve.

Fig. 2 is a view taken on the line 2-2 of Fig.1.

Fig. 3 is an enlarged fragmentary sectional view of the stem in my novel valve.

Fig. 4 is a cross-sectional view of the spring member in my novelvalve.

Referring now to the drawing, Fig. 1 shows my novel valve comprising a body portion I having ports 2 and 3, open end 4 and an annular seating portion 5. An internally threaded cylindrical member 6 having an offset portion I and an outwardly extending flange 8 depends from the top of the body portion l with the flange 8 seating on the upper open end 4 of the body I. An externally threaded member 9 is threadably engaged with the threaded portion of the cylindrical member 6 and moves relative thereto. A rotatable member 10 is rotatably mounted on the extended head portion II of the threaded member 9. The rotatable member ID has a grooved portion l2 for receiving a Washer l3 which is held in place by a nut [4 in engagement with a threaded stem l integral with the rotatable member [0.

Now coming to the gist of my invention, I superpose a disc-shaped, slightly-cupped spring member 16 on the flange 8 of the cylindrical member 6 and secure it with a bonnet I! which is threadably engaged to the outer threaded portion I8 on the upper portion of the body I. The spring member 16 is preferably corrugated. A stem 19 with ahandle 30 extends through the aperture 2|] in the bonnet ll. The lower end 2| of the stem 19 is slotted to engage lugs 22 on the threaded member 9 for rotation thereof. A flange 23 having opposed line contacting surfaces 24 and 25 (Fig.3) is disposed centrally of. the stem [9. The upper line contacting surface 24 of the flange 23 engages the machined surface 26 of the bonnet I! in sealing relationship. The lower surface 25 of the flange 23 engages an annular ring 21 of relatively soft'material such as soft copper, in sealing relationship. The ring 21 is secured to th disc-shaped member [6 by welding or any other suitable method.

In operation, the disc-shaped spring member l5 continually urges the ring 21 in engagement with the lower line contacting surface 25 and in turn the upper line contacting surface 24 is urged into engagement with the machined surface 26 of the bonnet l1. It will be evident that the line contacting surfaces 24 and 25 are in constant sealing relationship with the ring 21 and the machined surface 26 of the bonnet l'l thereby preing relationship. Upon rotation of the stem I9,

the threaded member 9 moves relative to the stationary cylindrical member 6 to move the rotatable member ID with .the washer l3 vertically into and out of engagement with the seating surface 5' to control flow of fluid through the valve. My

novel valve may be used for water, steam, vapor,

- embodiment of my invention without departing I from the spirit thereof, or from appended claim. What I claim is:'

the scope of the A valve comprising, in combination, a body portion having an open end and a seat, a stationary internally threaded cylindrical member having a flanged portion seating on the rim of the open end of said body portion, an externally ing a collar disposed between said spring and said bonnet and being provided with opposed line bearing surfaces, and a comparatively soft hearing member welded on the bonnet side of said spring, said spring constantly urging said soft bearing member into sealing engagement with one of said bearing surfaces and the other of said bearing surfaces into engagement with the machined surface of said bonnet.

WILLIAM c. MARSH. 

